Sky Sports pundit warns Novak Djokovic after Kevin Anderson win

The world No. 137 also suggested Federer'sLaver Cup involvement is a conflict of interest as Australian Open tournament director Craig Tiley has numerous business dealings with Swiss management company Team8, who represent Federer.

Benneteau, 36, blamed the Australian Open officials, and was concerned that the 20-time Grand Slam Champion had played "12 or 13" of his 14 matches at Melbourne in the past two years at night, avoiding the often blistering temperatures.

The likes of Laver Cup, Davis Cup, Craig Tiley and Tennis Australia, Nick Kyrgios and his Laver Cup appearance fee, court/stadium scheduling and more came into play in that conversation.

That's the view of Sky Sports pundit Greg Rusedski, who saw Federer progress into the ATP Tour Finals last four with a 6-4 6-3 win over Kevin Anderson.

Pushed further, Federer went to bat for himself and others: "I get asked, 'Would you like to play Monday or Tuesday?' sometimes".

Federer said: 'I'm very happy, I didn't play well against Kei and had my back against the wall. "Night matches are always something the tournament wants him to play", the 30-year-old Cilic said.

"I am thrilled, the body is feeling really good".

"And I don't think there's a tournament director in the world who is not going to take those factors into account when setting the schedule".

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Federer was then asked about the stinging comments made by recently retired Julien Benneteau, one of his junior rivals. "I just wanted to show to myself and all the spectators the real Dominic Thiem". Because I played great for three sets against him, and then after that it got tough. Players such as Benneteau have themselves profited in their careers off of how Federer has raised the profile of the sport and pushed for more for players.

He was also one of the favorites going into the final Grand Slam of the year in NY but went down tamely to John Millman in the round of 16.

Thiem's victory guaranteed Kevin Anderson a semifinals berth even before he faces Roger Federer tonight, and the Austrian is now reliant on world No. 6 Anderson returning the favour by beating the Swiss former champion.

Anderson won the first 11 games and needed only 64 minutes to demolish the woeful Nishikori in a remarkably one-sided group stage clash at London's O2 Arena.

"It's had more consequences than I thought. That's a massive privilege, I believe, that a tennis player has".

They began the final day of matches in their group potentially needing to win just one set, but once Jamie Murray and Bruno Soares had beaten Henri Kontinen and John Peers (replacements for the injured Alexander Peya and Nikola Mektic), the match between Klaasen-Venus and the Colombians Juan-Sebastian Cabal and Robert Farah became a straight eliminator for the semi-finals.

I think that's maybe what happened to me, and in a very disappointing way.

"In a flawless world, Federer plays a match or two on an outside court so those other than the fat cats can watch him", he wrote, adding later, "To me, the lede was buried here". I hope I can reproduce something like that.